The intermediolateral nucleus (IML) is a region of gray matter

Gray Matter

"Gray Matter" is a short story by Stephen King, first published in the October 1973 issue of Cavalier magazine, and later collected in King's 1978 collection Night Shift. It is set in the same area as King's novel Dreamcatcher.-Setting:...

 found in Rexed lamina

Rexed laminae

The Rexed laminae comprise a system of ten layers of grey matter , identified in the early 1950s by Bror Rexed to label portions of the spinal cord...

 VII of the spinal column.

Rexed Lamina VII contains several well defined nuclei including the nucleus dorsalis (Clarke's column), the intermediolateral cell column (lateral gray horn), and the sacral autonomic nucleus.

It extends from the first thoracic through the second lumbar segment, and contains the autonomic motor neurons that give rise to the preganglionic fibers

Preganglionic fibers

In the autonomic nervous system, fibers from the CNS to the ganglion are known as preganglionic fibers.All preganglionic fibers, whether they are in the sympathetic division or in the parasympathetic division, are cholinergic .Sympathetic preganglionic fibers tend to be shorter than parasympathetic...

of the sympathetic system. (Preganglionic sympathetic general visceral efferent)

External links

• http://thalamus.wustl.edu/course/spinal.html